Canister insert



FIG. 1 is a side elevation view of a canister insert;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a top perspective view thereof; and,

FIG. 5 is a top perspective view thereof with environmental matter.

The broken lines showing a canister in FIG. 5 represent environmentalstructure. All other broken lines illustrate portions of the canisterinsert. The broken lines form no part of the claimed design.

CLAIM The ornamental design for a canister insert, as shown anddescribed.